Section 07 ENGINE MANAGEMENT (DI)
Subsection 03 (DIAGNOSTIC PROCEDURES)
FAULT DETECTION AND COMPENSATORY ACTIONS
For a basic overview of the monitoring system and the limp home modes, see OVERVIEW section.
COMPONENT FAILURE WARNING SYSTEM
Sensor Failures
Refers to open or short circuit failures on sensors, drivers, injectors or ignition.
PROBLEM INFO CENTER RED LED BUZZER BUZZER CODE
LIMP HOME
MODE
➀
Manifold air
pressure sensor
(MAPS)
“MAINT”
ON OFF
7 Limited RPM
Manifold air
temperature
sensor (MATS)
“MAINT”
ON OFF
7 Limited RPM
Throttle position
sensor
(single TPS)
“MAINT” ON ON
5
Limited RPM
(idle speed if
both TPS's fail)
Water
temperature
sensor (WTS)
“MAINT” ON OFF/(ON) 7/(5)
Limited RPM
(code5ifEGTS
also fails)
Direct injector
(single injector)
“MAINT” ON OFF
7
Limited RPM
Fuel injector
(single injector)
“MAINT”
ON OFF
7
Limited RPM
Ignition (no firing
on one cylinder)
“MAINT”
ON OFF
7 Limited RPM
RAVE solenoid “MAINT”
ON OFF
7 Limited RPM
Starter solenoid
“MAINT”
ON OFF
7
Engine may not
start.
Fuel pump “MAINT”
ON OFF
7 Limited RPM
Exhaust gas
temperature
sensor (EGTS)
“MAINT”
ON OFF/(ON)
7/(5)
Limited RPM
(code 5 if WTS
also fails)
Fuel level sensor “MAINT”
ON OFF
7
None
Diagnostic cap
fault
“MAINT” ON OFF
7
None
Knock sensor “MAINT” ON OFF
7
Limited RPM
Engine drowned
mode activated
(it is not a fault)
None None ON 2
Engine will not
run. Release
throttle
➀ To see how the normal operation is recovered from the limp home mode, see the DI FAULT CODES
CHART elsewhere in this section. Look in column “Normal operation resumes if fault removed
and...”.
smr2004-Complete Line Up 379
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